A delivery person uses a service elevator to bring boxes of books up to an office. The delivery person weighs 140 lb and each box of books weighs 60 lb. The maximum capacity of the elevator is 1330 lb. How many boxes of books can the delivery person bring up at one time?

about 19

Step-by-step explanation:

take the elevator weight (1330), subtract the delivery persons weight (140) then divide by the weight of the books (60). It ends up being 19.8333 and so on.

Part 1) The value of y is  

Part 2) The value of z is

Part 3) The value of x is

Step-by-step explanation:

step 1

Find the value of y

we know that

----> given problem (is a right angle)

step 2

Find the value of z

we know that

----> by vertical angles

Solve for z

step 3

Find the value of x

we know that

----> by supplementary angles (linear pair)

Substitute the value of y and the value of z and solve for x